Ore-concentrator.



. PATLNTBD 11313.24', 1903. y J. H. MIGHLLSEN & M. LA M. B oRGLUM.

ORE GONGENTRATOR.

` APPLICATION FILED JAN. 27, 1902.

N0 MODEL.

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' ORB GONGENTRATOR. APPLICATION FILED JAN. 27, 1902.

ORGrLUMl N0 MODEL.

PATENTBD FEB.l 24, 19

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UNiTED STATES PATENT OFFICE.

JOHN H. MIOHELSENAAND MILLER. LA MOTIIE BORGLUM, OF BUTTE, MON- TANA;SAID MICHELSEN ASSIGNOR TO JOI-IN H. CURTIS AND GREEN MAJORS, OF BUT'IE,MONTANA.

oRs-ooNoENTRAToR.

SPECIFICATION forming part of Letters Patent No. 721,591, dated February24, 190.3. -Application led January 27,1902. Serial No. 91,448. (Nomodel.)

To all whom, it may concern:

Be it known that we, JOHN H. MICHELSEN and MILLER LA Moran BORGLUM,citizens of the United States, residing at Butte, in the county ofSilverbow and State of Montana,

have invented certain new and useful Improvements in Ore-Ooncentrators;Vand we do hereby declare the following to be a full, clear, and exactdescription of the invention,

1o such as will enable others skilled inthe art to which it appertainsto make and use the same.

lOur invention relates to improvements in" ore-concentrators, and it isa specific improvement upon the structure shown in Pat-V ent No.636,679, dated November 7, 1899, and Patent No. 671,348, dated April `2,1901.

The object of our invention is to provide an ore-concentrating tablewhich shall have zo in addition to the reciprocating motion described insaid patents a side motion at the rear or tail end thereof, which motionmay be increased or diminished, as preferred.

In the accompanying drawings, Figure 1 is z 5 a plan view of ourimproved ore-concentrator. Fig. 2 is a side elevation thereof, and Figs.3 and 4 are enlarged views showing details.

The table a is driven by the shaft c through 3o the toggle mechanism b,and the shaft c is actuated by the eccentric d. The table is supportedupon balls f, restingin sockets on the frame g, which frame is carriedon links h and the height of which may be adjusted by the hand-wheel i.A spring e is used to prevent the motion from being too sudden. Theseparts are as previously described in the patents referred to. Thesupportingballs f are carried in sockets j, lo, and l, 4o which increasein size successively. This is to provide for the side shake of the rearend of the table. Attached to the lower part of the table by means ofboltsn is a plate m, provided with a projecting pintle o. On this pintleis mounted a casting having projecting ears r. A washerp supports thiscasting in position, and a pin q, passing through the pintle o, supportsthe washer.

trepresents a link, which is pivoted in the 5o ears r b v means of thepin s. A pin u at the other end of the link or arm passes through ears win a casting o, which is supported on a pin as, provided with a washery.' A lever `or arm e' is also pivoted upon the pin :c and near itscenterjs enlarged, as shown at 1, and is perforated for the passage ofthe pin 2, which is carried by the plate 1l. This lever has anoutwardly-extending portion 3, extending outside of the framework, andis provided with a handleV 6. The part 3 rests upon 6o a curved support4.-, fastened to the framework of the machine and provided with a curvedslot 5, whereby the part 3 may be moved back and forth into variouspositions in regard to the plate 4. A hand-wheel 7 65 serves to securethe part 3 in any desired position.

With the parts as shown in Fig. S-that is, with the pivots in a lineperpendicular to the longitudinal axis of the machine-the table 7o beingpivotally connected to the link t, pivoted on the stationary arm orlever 3, a longitudinal movement of the table by the reciprocatingmechanism will cause it to swing sidewise on one side of thebefore-mentioned perpendicular in the arc of a circle around the point:r as a center, and a reverse or reciprocal longitudinal movement of thetable will cause the table to be deflected to an equal extent circularlyin the opposite direc-y 8o tion on the other side of the perpendicular.Thus we have a simple reciprocal side or end shake of the table. Movingthe arm 3 to the right coincident with the line 9 shifts the line ofpivots to a position oblique to the 8 5 transverse axis of the table.Therefore the table on its forward swing-that is, to the right on Fig.l--will approach much nearer the central line than on its backwardswing.

If the lever or arm 3 is movedstill farther to 9o the right to aposition indicated by the dotted line 10, a motion similar to that of ahandpan is obtained. Shifting the arm 3 to the position indicated by theline 8 will move the line of pivots to a position oblique to thetransverse axis, but in an opposite direction to that in the previouscase, causing the table in its forward motion to swing sidewise fartherfrom the transverse axis than in the backward motion.

By actual experiment roo with the particular kind of ore under treatmentthe position most favorable for concentration is found, and by thissimple means of adjustment we provide a table which will et'- fectivelyconcentrate almost any kind of ore.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent of the United States, is-

1. In an ore-concentrator, the combination of a table, means forreciprocating said table, a lever mounted on the frame of the machineand movable thereon, and a link pivoted to t 5 substantially asdescribed.

2. In an ore-concentrator, the combination of a table, means forreciprocating said table longitudinally, the framework of the machine, alever pivoted thereon, means for securing said lever in differentpositions upon said framework, and a link or arm pivoted to said table,said link and lever being pivoted together in a substantially horizontalplane, substantially as described.

In testimony whereof we affix our signatures in presence of twowitnesses.

JOI-IN H. MICHELSEN. MILLER LA MOTHE BORGLUM.

Witnesses:

A. T. MORGAN, M. P. ALEXANDER.

